It may take centuries for a soil to become fertile through the breakdown of rock and the accumulation of organic material, but human mismanagement can destroy that fertallity within a few years.
You cannot have 1 cm of soil. You need three dimensions to measure a quantity of soil - length, breadth and depth. 1 cm of soil could refer to a depth of 1 cm over a very tiny area or across the...
The dwarf planet Makemake is a "Kuiper Belt Object", which orbits far out from Neptune. The travel time will depend on the speed, and so far, there is no vehicle made that can do the journey at all....
A very long time A different answer: Different types of pie take different amounts of time. It also makes a difference whether one uses a frozen pie crust that only needs to be defrosted and placed...